Nissan Versa Sedan. Instruction — part 823

TM-198

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

P0973 SHIFT SOLENOID A

P0973 SHIFT SOLENOID A

DTC Logic

INFOID:0000000009267975

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Be careful of the driving speed.

1.

PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at

least 10 seconds, then perform the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

1. Start the engine.

2. Maintain the following conditions for 5 seconds or more.

3. Check the first trip DTC.
Is “P0973” detected?

YES

>> Go to

TM-198, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009267976

1.

CHECK CIRCUIT BETWEEN TCM AND A/T UNIT

1. Turn the ignition switch OFF.

2. Disconnect the TCM connector and A/T unit connector.

3. Check the continuity between TCM harness connector and ground.

Is the check result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK SELECT SWITCH ON-OFF SOLENOID VALVE

Check the select switch ON-OFF solenoid valve. Refer to

TM-199, "Component Inspection (Select Switch ON-

OFF Solenoid Valve)"

.

DTC

Trouble diagnosis name

DTC detection condition

Possible causes

P0973

Shift Solenoid “A” Control Cir-
cuit Low

The following diagnosis condi-
tions are met, and the TCM se-
lect switch ON-OFF solenoid
valve monitor value is ON con-
tinuously for 0.5 seconds or
more.
• Diagnosis condition
- select switch ON-OFF sole-

noid valve: OFF

- TCM power supply voltage:

10 V < TCM power supply
voltage < 16 V

• Harness or connector

(Short circuit to ground in the
select switch ON-OFF sole-
noid valve circuit)

• Select switch ON-OFF sole-

noid valve

Selector lever

: N position

⇒ R position

TCM harness connector

Ground

Continuity

Connector

Terminal

F44

1

Ground

Does not exist

P0973 SHIFT SOLENOID A

TM-199

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Is the check result normal?

YES

>> Check intermittent incident. Refer to

GI-45, "Intermittent Incident"

.

NO

>> Repair or replace the malfunctioning parts.

Component Inspection (Select Switch ON-OFF Solenoid Valve)

INFOID:0000000009267977

1.

CHECK SELECT SWITCH ON-OFF SOLENOID VALVE

Check the resistance between the A/T unit connector and ground.

Is the check result normal?

YES

>> INSPECTION END

NO

>> There is a malfunction of select switch ON-OFF solenoid valve. Replace the transaxle assembly.

Refer to

TM-250, "Removal and Installation"

.

A/T unit connector

Ground

Condition

Resistance

Terminal

19

Ground

A/T fluid temperature: 20

°C

(68

°F)

Approx. 27

Ω

A/T fluid temperature: 50

°C

(122

°F)

Approx. 31

Ω

A/T fluid temperature: 80

°C

(176

°F)

Approx. 35

Ω

TM-200

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

P0974 SHIFT SOLENOID A

P0974 SHIFT SOLENOID A

DTC Logic

INFOID:0000000009267978

DTC DETECTION LOGIC

DTC REPRODUCTION PROCEDURE

1.

PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at

least 10 seconds, then perform the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

1. Start the engine.

2. Maintain the following conditions for 5 seconds or more.

3. Check the first trip DTC.
Is “P0974” detected?

YES

>> Go to

TM-200, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009267979

1.

CHECK CIRCUIT BETWEEN TCM AND A/T UNIT

1. Turn ignition switch OFF.

2. Disconnect the TCM connector and A/T unit connector.

3. Check the continuity between the TCM harness connector and the A/T unit harness connector.

Is the check result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK SELECT SWITCH ON-OFF SOLENOID VALVE

Check the select switch ON-OFF solenoid valve. Refer to

TM-201, "Component Inspection (Select Switch ON-

OFF Solenoid Valve)"

.

Is the check result normal?

YES >> Check

intermittent incident. Refer to

GI-45, "Intermittent Incident"

.

DTC

Trouble diagnosis name

DTC detection condition

Possible causes

P0974

Shift Solenoid “A” Control Cir-
cuit High

The following diagnosis condi-
tions are met, and the TCM se-
lect switch ON-OFF solenoid
valve monitor value is OFF con-
tinuously for 0.5 seconds or
more.
• Diagnosis condition
- Select switch ON-OFF sole-

noid valve: ON

- TCM power supply voltage:

10 V < TCM power supply
voltage < 16 V

• Harness or connector

(Select switch ON-OFF sole-
noid valve circuit is open or
shorted to power supply)

• Select switch ON-OFF sole-

noid valve

Selector lever

: N position

⇒ R position

TCM harness connector

A/T unit harness connector

Continuity

Connector

Terminal

Connector

Terminal

F44

1

F46

19

Exists

P0974 SHIFT SOLENOID A

TM-201

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

NO

>> Repair or replace the malfunctioning parts.

Component Inspection (Select Switch ON-OFF Solenoid Valve)

INFOID:0000000009267980

1.

CHECK SELECT SWITCH ON-OFF SOLENOID VALVE

Check the resistance between the A/T unit connector and ground.

Is the check result normal?

YES

>> INSPECTION END

NO

>> There is a malfunction of select switch ON-OFF solenoid valve. Replace the transaxle assembly.

Refer to

TM-250, "Removal and Installation"

.

A/T unit connector

Ground

Condition

Resistance

Terminal

19

Ground

A/T fluid temperature: 20

°C

(68

°F)

Approx. 27

Ω

A/T fluid temperature: 50

°C

(122

°F)

Approx. 31

Ω

A/T fluid temperature: 80

°C

(176

°F)

Approx. 35

Ω